1
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O’Laughlin KN, Klabbers RE, Ebna Mannan I, Gentile NL, Geyer RE, Zheng Z, Yu H, Li SX, Chan KCG, Spatz ES, Wang RC, L’Hommedieu M, Weinstein RA, Plumb ID, Gottlieb M, Huebinger RM, Hagen M, Elmore JG, Hill MJ, Kelly M, McDonald S, Rising KL, Rodriguez RM, Venkatesh A, Idris AH, Santangelo M, Koo K, Saydah S, Nichol G, Stephens KA. Ethnic and racial differences in self-reported symptoms, health status, activity level, and missed work at 3 and 6 months following SARS-CoV-2 infection. Front Public Health 2024; 11:1324636. [PMID: 38352132 PMCID: PMC10861779 DOI: 10.3389/fpubh.2023.1324636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 12/12/2023] [Indexed: 02/16/2024] Open
Abstract
Introduction Data on ethnic and racial differences in symptoms and health-related impacts following SARS-CoV-2 infection are limited. We aimed to estimate the ethnic and racial differences in symptoms and health-related impacts 3 and 6 months after the first SARS-CoV-2 infection. Methods Participants included adults with SARS-CoV-2 infection enrolled in a prospective multicenter US study between 12/11/2020 and 7/4/2022 as the primary cohort of interest, as well as a SARS-CoV-2-negative cohort to account for non-SARS-CoV-2-infection impacts, who completed enrollment and 3-month surveys (N = 3,161; 2,402 SARS-CoV-2-positive, 759 SARS-CoV-2-negative). Marginal odds ratios were estimated using GEE logistic regression for individual symptoms, health status, activity level, and missed work 3 and 6 months after COVID-19 illness, comparing each ethnicity or race to the referent group (non-Hispanic or white), adjusting for demographic factors, social determinants of health, substance use, pre-existing health conditions, SARS-CoV-2 infection status, COVID-19 vaccination status, and survey time point, with interactions between ethnicity or race and time point, ethnicity or race and SARS-CoV-2 infection status, and SARS-CoV-2 infection status and time point. Results Following SARS-CoV-2 infection, the majority of symptoms were similar over time between ethnic and racial groups. At 3 months, Hispanic participants were more likely than non-Hispanic participants to report fair/poor health (OR: 1.94; 95%CI: 1.36-2.78) and reduced activity (somewhat less, OR: 1.47; 95%CI: 1.06-2.02; much less, OR: 2.23; 95%CI: 1.38-3.61). At 6 months, differences by ethnicity were not present. At 3 months, Other/Multiple race participants were more likely than white participants to report fair/poor health (OR: 1.90; 95% CI: 1.25-2.88), reduced activity (somewhat less, OR: 1.72; 95%CI: 1.21-2.46; much less, OR: 2.08; 95%CI: 1.18-3.65). At 6 months, Asian participants were more likely than white participants to report fair/poor health (OR: 1.88; 95%CI: 1.13-3.12); Black participants reported more missed work (OR, 2.83; 95%CI: 1.60-5.00); and Other/Multiple race participants reported more fair/poor health (OR: 1.83; 95%CI: 1.10-3.05), reduced activity (somewhat less, OR: 1.60; 95%CI: 1.02-2.51; much less, OR: 2.49; 95%CI: 1.40-4.44), and more missed work (OR: 2.25; 95%CI: 1.27-3.98). Discussion Awareness of ethnic and racial differences in outcomes following SARS-CoV-2 infection may inform clinical and public health efforts to advance health equity in long-term outcomes.
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Affiliation(s)
- Kelli N. O’Laughlin
- Department of Emergency Medicine, University of Washington, Seattle, WA, United States
- Department of Global Health, University of Washington, Seattle, WA, United States
| | - Robin E. Klabbers
- Department of Emergency Medicine, University of Washington, Seattle, WA, United States
- Department of Global Health, University of Washington, Seattle, WA, United States
| | - Imtiaz Ebna Mannan
- Center for Outcomes Research and Evaluation, Yale School of Medicine, New Haven, CT, United States
| | - Nicole L. Gentile
- Department of Family Medicine, University of Washington, Seattle, WA, United States
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, WA, United States
- Post-COVID Rehabilitation and Recovery Clinic, University of Washington, Seattle, WA, United States
| | - Rachel E. Geyer
- Department of Family Medicine, University of Washington, Seattle, WA, United States
| | - Zihan Zheng
- Department of Family Medicine, University of Washington, Seattle, WA, United States
| | - Huihui Yu
- Center for Outcomes Research and Evaluation, Yale School of Medicine, New Haven, CT, United States
- Section of Cardiovascular Medicine, Yale School of Medicine, New Haven, CT, United States
| | - Shu-Xia Li
- Center for Outcomes Research and Evaluation, Yale School of Medicine, New Haven, CT, United States
| | - Kwun C. G. Chan
- Department of Biostatistics, University of Washington, Seattle, WA, United States
- Department of Health Systems and Population Health, University of Washington, Seattle, WA, United States
| | - Erica S. Spatz
- Section of Cardiovascular Medicine, Yale School of Medicine, New Haven, CT, United States
- Department of Epidemiology, Yale School of Public Health, New Haven, CT, United States
- Yale Center for Outcomes Research and Evaluation, Yale School of Medicine, New Haven, CT, United States
| | - Ralph C. Wang
- Department of Emergency Medicine, University of California San Francisco, San Francisco, CA, United States
| | - Michelle L’Hommedieu
- Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States
| | - Robert A. Weinstein
- Divisions of Infectious Diseases, Department of Internal Medicine, Rush University Medical Center, Chicago, IL, United States
- Department of Medicine, Cook County Hospital, Chicago, IL, United States
| | - Ian D. Plumb
- National Center for Immunizations and Respiratory Diseases, U.S. Centers for Disease Control and Prevention, Atlanta, GA, United States
| | - Michael Gottlieb
- Department of Emergency Medicine, Rush University Medical Center, Chicago, IL, United States
| | - Ryan M. Huebinger
- UTHealth Houston McGovern Medical School Department of Emergency Medicine, Houston, TX, United States
| | - Melissa Hagen
- National Center for Immunizations and Respiratory Diseases, U.S. Centers for Disease Control and Prevention, Atlanta, GA, United States
| | - Joann G. Elmore
- Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States
| | - Mandy J. Hill
- UTHealth Houston McGovern Medical School Department of Emergency Medicine, Houston, TX, United States
| | - Morgan Kelly
- Department of Emergency Medicine, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, United States
| | - Samuel McDonald
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas, TX, United States
- Clinical Informatics Center, University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Kristin L. Rising
- Department of Emergency Medicine, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, United States
- Center for Connected Care, Thomas Jefferson University, Philadelphia, PA, United States
| | - Robert M. Rodriguez
- Department of Emergency Medicine, University of California San Francisco, San Francisco, CA, United States
| | - Arjun Venkatesh
- Center for Outcomes Research and Evaluation, Yale School of Medicine, New Haven, CT, United States
- Department of Emergency Medicine, Yale School of Medicine, New Haven, CT, United States
| | - Ahamed H. Idris
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Michelle Santangelo
- Divisions of Infectious Diseases, Department of Internal Medicine, Rush University Medical Center, Chicago, IL, United States
| | - Katherine Koo
- Divisions of Infectious Diseases, Department of Internal Medicine, Rush University Medical Center, Chicago, IL, United States
| | - Sharon Saydah
- National Center for Immunizations and Respiratory Diseases, U.S. Centers for Disease Control and Prevention, Atlanta, GA, United States
| | - Graham Nichol
- Department of Emergency Medicine, University of Washington, Seattle, WA, United States
| | - Kari A. Stephens
- Department of Family Medicine, University of Washington, Seattle, WA, United States
- Biomedical Informatics and Medical Education, University of Washington, Seattle, WA, United States
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Ungerer GN, Winoker JS, Healy KA, Shah O, Koo K. Mobile and eHealth technologies in the management and prevention of nephrolithiasis: A systematic review. Actas Urol Esp 2024; 48:25-41. [PMID: 37364768 DOI: 10.1016/j.acuroe.2023.06.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 04/19/2023] [Indexed: 06/28/2023]
Abstract
INTRODUCTION Kidney stone disease (KSD) is a common urological condition that often requires long-term care. Mobile health (mHealth) and eHealth technologies have the potential to enhance chronic disease management and behavioral change. To assess opportunities to apply these tools to improve KSD treatment and prevention, we aimed to assess current evidence on the use, benefits, and limitations of mHealth and eHealth in KSD. METHODS We performed a systematic review of primary research studies of mHealth and eHealth in the evaluation and management of KSD. Two independent researchers screened citations by title and abstract for relevance, then full-text review was performed for descriptive summary of the studies. RESULTS A total of 37 articles were included for analysis. Primary domains of evidence included: 1) "smart" water bottles and mobile-device apps for tracking fluid consumption, which showed increased intake in most studies; 2) ureteral stent tracking platforms, which improved the rate of long-term retained stents; 3) virtual stone clinics, which have been suggested to increase access, lower costs, and have satisfactory outcomes; 4) smartphone-based endoscopy platforms, which offered cost-effective image quality in resource-limited settings; 5) patient information about KSD online, which was typically characterized as poor quality and/or accuracy, particularly on YouTube. Most studies were proof-of-concept or single-arm intervention designs, with limited assessment of effectiveness or long-term clinical outcomes. CONCLUSIONS Mobile and eHealth technologies have significant real-world applications to KSD prevention, intervention, and patient education. A lack of rigorous effectiveness studies currently limits evidence-based conclusions and incorporation in clinical guidelines.
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Affiliation(s)
- G N Ungerer
- Department of Urology, Mayo Clinic, Rochester, MN, USA
| | - J S Winoker
- Smith Institute for Urology at Lenox Hill, Northwell Health, New York, NY, USA
| | - K A Healy
- Department of Urology, Columbia University Irving Medical Center, New York, NY, USA
| | - O Shah
- Department of Urology, Columbia University Irving Medical Center, New York, NY, USA
| | - K Koo
- Department of Urology, Mayo Clinic, Rochester, MN, USA.
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3
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Gottlieb M, Spatz ES, Yu H, Wisk LE, Elmore JG, Gentile NL, Hill M, Huebinger RM, Idris AH, Kean ER, Koo K, Li SX, McDonald S, Montoy JCC, Nichol G, O’Laughlin KN, Plumb ID, Rising KL, Santangelo M, Saydah S, Wang RC, Venkatesh A, Stephens KA, Weinstein RA. Long COVID Clinical Phenotypes up to 6 Months After Infection Identified by Latent Class Analysis of Self-Reported Symptoms. Open Forum Infect Dis 2023; 10:ofad277. [PMID: 37426952 PMCID: PMC10327879 DOI: 10.1093/ofid/ofad277] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 05/15/2023] [Indexed: 07/11/2023] Open
Abstract
Background The prevalence, incidence, and interrelationships of persistent symptoms after severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection vary. There are limited data on specific phenotypes of persistent symptoms. Using latent class analysis (LCA) modeling, we sought to identify whether specific phenotypes of COVID-19 were present 3 months and 6 months post-infection. Methods This was a multicenter study of symptomatic adults tested for SARS-CoV-2 with prospectively collected data on general symptoms and fatigue-related symptoms up to 6 months postdiagnosis. Using LCA, we identified symptomatically homogenous groups among COVID-positive and COVID-negative participants at each time period for both general and fatigue-related symptoms. Results Among 5963 baseline participants (4504 COVID-positive and 1459 COVID-negative), 4056 had 3-month and 2856 had 6-month data at the time of analysis. We identified 4 distinct phenotypes of post-COVID conditions (PCCs) at 3 and 6 months for both general and fatigue-related symptoms; minimal-symptom groups represented 70% of participants at 3 and 6 months. When compared with the COVID-negative cohort, COVID-positive participants had higher occurrence of loss of taste/smell and cognition problems. There was substantial class-switching over time; those in 1 symptom class at 3 months were equally likely to remain or enter a new phenotype at 6 months. Conclusions We identified distinct classes of PCC phenotypes for general and fatigue-related symptoms. Most participants had minimal or no symptoms at 3 and 6 months of follow-up. Significant proportions of participants changed symptom groups over time, suggesting that symptoms present during the acute illness may differ from prolonged symptoms and that PCCs may have a more dynamic nature than previously recognized. Clinical Trials Registration. NCT04610515.
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Affiliation(s)
- Michael Gottlieb
- Department of Emergency Medicine, Rush University Medical Center, Chicago, Illinois, USA
| | - Erica S Spatz
- Section of Cardiovascular Medicine, Yale School of Medicine,New Haven, Connecticut, USA
- Department of Epidemiology, Yale School of Public Health,New Haven, Connecticut, USA
- Yale Center for Outcomes Research and Evaluation, Yale School of Medicine,New Haven, Connecticut, USA
| | - Huihui Yu
- Section of Cardiovascular Medicine, Yale School of Medicine,New Haven, Connecticut, USA
- Yale Center for Outcomes Research and Evaluation, Yale School of Medicine,New Haven, Connecticut, USA
| | - Lauren E Wisk
- Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Joann G Elmore
- Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Nicole L Gentile
- Post-COVID Rehabilitation and Recovery Clinic, Department of Family Medicine, Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington, USA
| | - Mandy Hill
- Department of Emergency Medicine, UTHealth, Houston, Texas, USA
| | | | - Ahamed H Idris
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Efrat R Kean
- Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Katherine Koo
- Department of Internal Medicine, Rush University Medical Center, Chicago, Illinois, USA
| | - Shu-Xia Li
- Yale Center for Outcomes Research and Evaluation, Yale School of Medicine,New Haven, Connecticut, USA
| | - Samuel McDonald
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
- Clinical Informatics Center, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Juan Carlos C Montoy
- Department of Emergency Medicine, University of California, San Francisco, San Francisco, California, USA
| | - Graham Nichol
- Departments of Medicine and Emergency Medicine, University of Washington, Seattle, Washington, USA
| | - Kelli N O’Laughlin
- Departments of Emergency Medicine and Global Health, University of Washington, Seattle, Washington, USA
| | - Ian D Plumb
- National Center for Immunizations and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Kristin L Rising
- Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
- Center for Connected Care, Sidney Kimmel Medical School, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Michelle Santangelo
- Department of Internal Medicine, Rush University Medical Center, Chicago, Illinois, USA
| | - Sharon Saydah
- National Center for Immunizations and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Ralph C Wang
- Department of Emergency Medicine, University of California, San Francisco, San Francisco, California, USA
| | - Arjun Venkatesh
- Yale Center for Outcomes Research and Evaluation, Yale School of Medicine,New Haven, Connecticut, USA
- Department of Emergency Medicine, Yale School of Medicine, New Haven, Connecticut, USA
| | - Kari A Stephens
- Departments of Family Medicine, Biomedical Informatics and Medical Education, University of Washington, Seattle, Washington, USA
| | - Robert A Weinstein
- Division of Infectious Diseases, Department of Internal Medicine, Rush University Medical Center, Chicago, Illinois, USA
- Department of Internal Medicine, Cook County Hospital, Chicago, Illinois, USA
- The CORE Center, Chicago, Illinois, USA
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4
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Wang RC, Gottlieb M, Montoy JCC, Rodriguez RM, Yu H, Spatz ES, Chandler CW, Elmore JG, Hannikainen PA, Chang AM, Hill M, Huebinger RM, Idris AH, Koo K, Li SX, McDonald S, Nichol G, O’Laughlin KN, Plumb ID, Santangelo M, Saydah S, Stephens KA, Venkatesh AK, Weinstein RA. Association Between SARS-CoV-2 Variants and Frequency of Acute Symptoms: Analysis of a Multi-institutional Prospective Cohort Study-December 20, 2020-June 20, 2022. Open Forum Infect Dis 2023; 10:ofad275. [PMID: 37426947 PMCID: PMC10327880 DOI: 10.1093/ofid/ofad275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 05/22/2023] [Indexed: 07/11/2023] Open
Abstract
Background While prior work examining severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants of concern focused on hospitalization and death, less is known about differences in clinical presentation. We compared the prevalence of acute symptoms across pre-Delta, Delta, and Omicron. Methods We conducted an analysis of the Innovative Support for Patients with SARS-CoV-2 Infections Registry (INSPIRE), a cohort study enrolling symptomatic SARS-CoV-2-positive participants. We determined the association between the pre-Delta, Delta, and Omicron time periods and the prevalence of 21 coronavirus disease 2019 (COVID-19) acute symptoms. Results We enrolled 4113 participants from December 2020 to June 2022. Pre-Delta vs Delta vs Omicron participants had increasing sore throat (40.9%, 54.6%, 70.6%; P < .001), cough (50.9%, 63.3%, 66.7%; P < .001), and runny noses (48.9%, 71.3%, 72.9%; P < .001). We observed reductions during Omicron in chest pain (31.1%, 24.2%, 20.9%; P < .001), shortness of breath (42.7%, 29.5%, 27.5%; P < .001), loss of taste (47.1%, 61.8%, 19.2%; P < .001), and loss of smell (47.5%, 55.6%, 20.0%; P < .001). After adjustment, those infected during Omicron had significantly higher odds of sore throat vs pre-Delta (odds ratio [OR], 2.76; 95% CI, 2.26-3.35) and Delta (OR, 1.96; 95% CI, 1.69-2.28). Conclusions Participants infected during Omicron were more likely to report symptoms of common respiratory viruses, such as sore throat, and less likely to report loss of smell and taste. Trial registration NCT04610515.
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Affiliation(s)
- Ralph C Wang
- Department of Emergency Medicine, University of California San Francisco, San Francisco, California, USA
| | - Michael Gottlieb
- Department of Emergency Medicine, Rush University Medical Center, Chicago, Illinois, USA
| | - Juan Carlos C Montoy
- Department of Emergency Medicine, University of California San Francisco, San Francisco, California, USA
| | - Robert M Rodriguez
- Department of Emergency Medicine, University of California San Francisco, San Francisco, California, USA
| | - Huihui Yu
- Center for Outcomes Research and Evaluation, Section of Cardiovascular Medicine, Yale School of Medicine, New Haven, Connecticut, USA
| | - Erica S Spatz
- Center for Outcomes Research and Evaluation, Section of Cardiovascular Medicine, Yale School of Medicine, New Haven, Connecticut, USA
| | - Christopher W Chandler
- Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA
| | - Joann G Elmore
- Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA
- Department of Health Policy and Management, Fielding School of Public Health, University of California Los Angeles, Los Angeles, California, USA
| | - Paavali A Hannikainen
- Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Anna Marie Chang
- Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Mandy Hill
- Department of Emergency Medicine, UTHealth Houston, Houston, Texas, USA
| | - Ryan M Huebinger
- Department of Emergency Medicine, UTHealth Houston, Houston, Texas, USA
| | - Ahamed H Idris
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Katherine Koo
- Department of Medicine, Division of Infectious Diseases, Rush University Medical Center, Chicago, Illinois, USA
| | - Shu-Xia Li
- Center for Outcomes Research and Evaluation, Section of Cardiovascular Medicine, Yale School of Medicine, New Haven, Connecticut, USA
| | - Samuel McDonald
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Graham Nichol
- Departments of Medicine and Emergency Medicine, University of Washington, Seattle, Washington, USA
| | - Kelli N O’Laughlin
- Departments of Emergency Medicine and Global Health, University of Washington, Seattle, Washington, USA
| | - Ian D Plumb
- Centers for Disease Control and Prevention, National Center for Immunizations and Respiratory Diseases, Atlanta, Georgia, USA
| | - Michelle Santangelo
- Division of Infectious Diseases, Department of Medicine, Rush University Medical Center, Chicago, Illinois, USA
| | - Sharon Saydah
- Centers for Disease Control and Prevention, National Center for Immunizations and Respiratory Diseases, Atlanta, Georgia, USA
| | - Kari A Stephens
- Departments of Family Medicine and Biomedical Informatics & Medical Education, University of Washington, Seattle, Washington, USA
| | - Arjun K Venkatesh
- Center for Outcomes Research and Evaluation, Section of Cardiovascular Medicine, Yale School of Medicine, New Haven, Connecticut, USA
- Department of Emergency Medicine, Yale School of Medicine, New Haven, Connecticut, USA
| | - Robert A Weinstein
- Department of Medicine, Division of Infectious Diseases, Rush University Medical Center, Chicago, Illinois, USA
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5
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Gottlieb M, Wang RC, Yu H, Spatz ES, Montoy JCC, Rodriguez RM, Chang AM, Elmore JG, Hannikainen PA, Hill M, Huebinger RM, Idris AH, Lin Z, Koo K, McDonald S, O’Laughlin KN, Plumb ID, Santangelo M, Saydah S, Willis M, Wisk LE, Venkatesh A, Stephens KA, Weinstein RA. Severe Fatigue and Persistent Symptoms at 3 Months Following Severe Acute Respiratory Syndrome Coronavirus 2 Infections During the Pre-Delta, Delta, and Omicron Time Periods: A Multicenter Prospective Cohort Study. Clin Infect Dis 2023; 76:1930-1941. [PMID: 36705268 PMCID: PMC10249989 DOI: 10.1093/cid/ciad045] [Citation(s) in RCA: 24] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 01/12/2023] [Accepted: 01/25/2023] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND Most research on severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants focuses on initial symptomatology with limited longer-term data. We characterized prevalences of prolonged symptoms 3 months post-SARS-CoV-2 infection across 3 variant time-periods (pre-Delta, Delta, and Omicron). METHODS This multicenter prospective cohort study of adults with acute illness tested for SARS-CoV-2 compared fatigue severity, fatigue symptoms, organ system-based symptoms, and ≥3 symptoms across variants among participants with a positive ("COVID-positive") or negative SARS-CoV-2 test ("COVID-negative") at 3 months after SARS-CoV-2 testing. Variant periods were defined by dates with ≥50% dominant strain. We performed multivariable logistic regression modeling to estimate independent effects of variants adjusting for sociodemographics, baseline health, and vaccine status. RESULTS The study included 2402 COVID-positive and 821 COVID-negative participants. Among COVID-positives, 463 (19.3%) were pre-Delta, 1198 (49.9%) Delta, and 741 (30.8%) Omicron. The pre-Delta COVID-positive cohort exhibited more prolonged severe fatigue (16.7% vs 11.5% vs 12.3%; P = .017) and presence of ≥3 prolonged symptoms (28.4% vs 21.7% vs 16.0%; P < .001) compared with the Delta and Omicron cohorts. No differences were seen in the COVID-negatives across time-periods. In multivariable models adjusted for vaccination, severe fatigue and odds of having ≥3 symptoms were no longer significant across variants. CONCLUSIONS Prolonged symptoms following SARS-CoV-2 infection were more common among participants infected during pre-Delta than with Delta and Omicron; however, these differences were no longer significant after adjusting for vaccination status, suggesting a beneficial effect of vaccination on risk of long-term symptoms. Clinical Trials Registration. NCT04610515.
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Affiliation(s)
- Michael Gottlieb
- Department of Emergency Medicine, Rush University Medical Center, Chicago, Illinois, USA
| | - Ralph C Wang
- Department of Emergency Medicine, University of California, San Francisco, California, USA
| | - Huihui Yu
- Center for Outcomes Research and Evaluation, Yale School of Medicine, New Haven, Connecticut, USA
- Section of Cardiovascular Medicine, Yale School of Medicine, New Haven, Connecticut, USA
| | - Erica S Spatz
- Center for Outcomes Research and Evaluation, Yale School of Medicine, New Haven, Connecticut, USA
- Department of Epidemiology, Yale School of Public Health, New Haven, Connecticut, USA
| | - Juan Carlos C Montoy
- Department of Emergency Medicine, University of California, San Francisco, California, USA
| | - Robert M Rodriguez
- Department of Emergency Medicine, University of California – San Francisco School of Medicine, San Francisco, California, USA
| | - Anna Marie Chang
- Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Joann G Elmore
- Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine, University of California – Los Angeles, Los Angeles, California, USA
| | - Paavali A Hannikainen
- Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Mandy Hill
- Department of Emergency Medicine, UTHealth Houston, Houston, Texas, USA
| | - Ryan M Huebinger
- Department of Emergency Medicine, UTHealth Houston, Houston, Texas, USA
| | - Ahamed H Idris
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Zhenqiu Lin
- Center for Outcomes Research and Evaluation, Yale School of Medicine, New Haven, Connecticut, USA
- Section of Cardiovascular Medicine, Yale School of Medicine, New Haven, Connecticut, USA
| | - Katherine Koo
- Department of Medicine, Division of Infectious Diseases, Rush University Medical Center, Chicago, Illinois, USA
| | - Samuel McDonald
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
- Clinical Informatics Center, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Kelli N O’Laughlin
- Department of Global Health, University of Washington, Seattle, Washington, USA
| | - Ian D Plumb
- National Center for Immunizations and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Michelle Santangelo
- Department of Medicine, Division of Infectious Diseases, Rush University Medical Center, Chicago, Illinois, USA
| | - Sharon Saydah
- National Center for Immunizations and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Michael Willis
- Department of Global Health, University of Washington, Seattle, Washington, USA
| | - Lauren E Wisk
- Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine, University of California – Los Angeles, Los Angeles, California, USA
| | - Arjun Venkatesh
- Center for Outcomes Research and Evaluation, Yale School of Medicine, New Haven, Connecticut, USA
- Department of Emergency Medicine, Yale School of Medicine, New Haven, Connecticut, USA
| | - Kari A Stephens
- Department of Biomedical Informatics and Medical Education, University of Washington, Seattle, Washington, USA
- Department of Psychiatry and Behavioral Sciences, University of Washington, Seattle, Washington, USA
| | - Robert A Weinstein
- Department of Medicine, Division of Infectious Diseases, Rush University Medical Center, Chicago, Illinois, USA
- Department of Medicine, Division of Infectious Diseases, Cook County Hospital, Chicago, Illinois, USA
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6
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Spatz ES, Gottlieb M, Wisk LE, Anderson J, Chang AM, Gentile NL, Hill MJ, Huebinger RM, Idris AH, Kinsman J, Koo K, Li SX, McDonald S, Plumb ID, Rodriguez R, Saydah S, Slovis B, Stephens KA, Unger ER, Wang RC, Yu H, Hota B, Elmore JG, Weinstein RA, Venkatesh A. Three-month symptom profiles among symptomatic adults with positive and negative SARS-CoV-2 tests: a prospective cohort study from the INSPIRE group. Clin Infect Dis 2022; 76:1559-1566. [PMID: 36573005 DOI: 10.1093/cid/ciac966] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 11/22/2022] [Accepted: 12/19/2022] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Long-term symptoms following SARS-CoV-2 infection are a major concern, yet their prevalence is poorly understood. METHODS We conducted a prospective cohort study comparing adults with SARS-CoV-2 infection (COVID+) with adults who tested negative (COVID-), enrolled within 28 days of an FDA-approved SARS-CoV2 test result for active symptoms. Sociodemographic characteristics, symptoms of SARS-CoV-2 infection (assessed with the CDC Person Under Investigation Symptom List), and symptoms of post-infectious syndromes (i.e., fatigue, sleep quality, muscle/joint pains, unrefreshing sleep, and dizziness/fainting, assessed with CDC Short Symptom Screener for myalgic encephalomyelitis/chronic fatigue syndrome) were assessed at baseline and 3 months via electronic surveys sent via text or email. RESULTS Among the first 1,000 participants, 722 were COVID + and 278 were COVID-. Mean age was 41.5 (SD 15.2); 66.3% were female, 13.4% were Black, and 15.3% were Hispanic. At baseline, SARS-CoV-2 symptoms were more common in the COVID + group than the COVID - group. At 3-months, SARS-CoV-2 symptoms declined in both groups although were more prevalent in the COVID + group: upper respiratory symptoms/head/eyes/ears/nose/throat (HEENT; 37.3% vs 20.9%), constitutional (28.8% vs 19.4%), musculoskeletal (19.5% vs 14.7%), pulmonary (17.6% vs 12.2%), cardiovascular (10.0% vs 7.2%), and gastrointestinal (8.7% vs 8.3%); only 50.2% and 73.3% reported no symptoms at all. Symptoms of post-infectious syndromes were similarly prevalent among the COVID + and COVID - groups at 3 months. CONCLUSIONS Approximately half of COVID + participants, as compared with one-quarter of COVID - participants, had at least one SARS-CoV-2 symptom at 3 months, highlighting the need for future work to distinguish Long COVID.
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Affiliation(s)
- Erica S Spatz
- Section of Cardiovascular Medicine, Department of Medicine, Yale School of Medicine; Department of Epidemiology, Yale School of Public Health, New Haven, CT, USA
| | - Michael Gottlieb
- Department of Emergency Medicine, Rush University Medical Center, Chicago, IL, USA
| | - Lauren E Wisk
- Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine at the University of California, Los Angeles (UCLA), Los Angeles, CA; Department of Health Policy and Management, Fielding School of Public Health at UCLA, Los Angeles, CA, USA
| | - Jill Anderson
- Harborview Center for Prehospital Emergency Care, University of Washington, Seattle, WA, USA
| | - Anna Marie Chang
- Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, PA, USA
| | - Nicole L Gentile
- Departments of Family Medicine and Laboratory Medicine and Pathology, University of Washington, Seattle, WA, USA
| | - Mandy J Hill
- Department of Emergency Medicine, UTHealth Houston, McGovern Medical School, Houston, TX, USA
| | - Ryan M Huebinger
- Department of Emergency Medicine, UTHealth Houston, McGovern Medical School, Houston, TX, USA
| | - Ahamed H Idris
- Dept. of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Jeremiah Kinsman
- Department of Emergency Medicine, Yale University School of Medicine, New Haven, CT, USA
| | - Katherine Koo
- Department of Internal Medicine, Rush University Medical Center, Chicago, IL, USA
| | - Shu-Xia Li
- Section of Cardiovascular Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, CT; Center for Outcomes Research and Evaluation, Yale New Haven Hospital, New Haven, CT, USA
| | - Samuel McDonald
- Department of Emergency Medicine, University of Texas Southwestern, Dallas, TX, USA
| | - Ian D Plumb
- National Center for Immunizations and Respiratory Diseases, Centers for Disease Control & Prevention, Atlanta, GA, USA
| | - Robert Rodriguez
- Department of Emergency Medicine, University of California, San Francisco, CA, USA
| | - Sharon Saydah
- National Center for Immunizations and Respiratory Diseases, Centers for Disease Control & Prevention, Atlanta, GA, USA
| | - Benjamin Slovis
- Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, PA, USA
| | - Kari A Stephens
- Departments of Family Medicine, Harborview Center for Prehospital Emergency Care, University of Washington, Seattle, WA, USA
| | - Elizabeth R Unger
- National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control & Prevention, Atlanta, GA, USA
| | - Ralph C Wang
- Department of Emergency Medicine, University of California, San Francisco, CA, USA
| | - Huihui Yu
- Section of Cardiovascular Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, CT; Center for Outcomes Research and Evaluation, Yale New Haven Hospital, New Haven, CT, USA
| | - Bala Hota
- Chief Informatics Officer, Tendo Systems, Inc., San Francisco, CA, USA
| | - Joann G Elmore
- Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine at the University of California, Los Angeles (UCLA), Los Angeles, CA; Department of Health Policy and Management, Fielding School of Public Health at UCLA, Los Angeles, CA, USA
| | - Robert A Weinstein
- Division of Infectious Diseases, Department of Internal Medicine, Rush University Medical Center, Chicago, IL, USA
| | - Arjun Venkatesh
- Department of Emergency Medicine, Yale School of Medicine, New Haven, CT, Center for Outcomes Research and Evaluation, Yale New Haven Hospital, New Haven, CT, USA
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Wisk LE, Gottlieb MA, Spatz ES, Yu H, Wang RC, Slovis BH, Saydah S, Plumb ID, O’Laughlin KN, Montoy JCC, McDonald SA, Lin Z, Lin JMS, Koo K, Idris AH, Huebinger RM, Hill MJ, Gentile NL, Chang AM, Anderson J, Hota B, Venkatesh AK, Weinstein RA, Elmore JG, Nichol G. Association of Initial SARS-CoV-2 Test Positivity With Patient-Reported Well-being 3 Months After a Symptomatic Illness. JAMA Netw Open 2022; 5:e2244486. [PMID: 36454572 PMCID: PMC9716377 DOI: 10.1001/jamanetworkopen.2022.44486] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
IMPORTANCE Long-term sequelae after symptomatic SARS-CoV-2 infection may impact well-being, yet existing data primarily focus on discrete symptoms and/or health care use. OBJECTIVE To compare patient-reported outcomes of physical, mental, and social well-being among adults with symptomatic illness who received a positive vs negative test result for SARS-CoV-2 infection. DESIGN, SETTING, AND PARTICIPANTS This cohort study was a planned interim analysis of an ongoing multicenter prospective longitudinal registry study (the Innovative Support for Patients With SARS-CoV-2 Infections Registry [INSPIRE]). Participants were enrolled from December 11, 2020, to September 10, 2021, and comprised adults (aged ≥18 years) with acute symptoms suggestive of SARS-CoV-2 infection at the time of receipt of a SARS-CoV-2 test approved by the US Food and Drug Administration. The analysis included the first 1000 participants who completed baseline and 3-month follow-up surveys consisting of questions from the 29-item Patient-Reported Outcomes Measurement Information System (PROMIS-29; 7 subscales, including physical function, anxiety, depression, fatigue, social participation, sleep disturbance, and pain interference) and the PROMIS Short Form-Cognitive Function 8a scale, for which population-normed T scores were reported. EXPOSURES SARS-CoV-2 status (positive or negative test result) at enrollment. MAIN OUTCOMES AND MEASURES Mean PROMIS scores for participants with positive COVID-19 tests vs negative COVID-19 tests were compared descriptively and using multivariable regression analysis. RESULTS Among 1000 participants, 722 (72.2%) received a positive COVID-19 result and 278 (27.8%) received a negative result; 406 of 998 participants (40.7%) were aged 18 to 34 years, 644 of 972 (66.3%) were female, 833 of 984 (84.7%) were non-Hispanic, and 685 of 974 (70.3%) were White. A total of 282 of 712 participants (39.6%) in the COVID-19-positive group and 147 of 275 participants (53.5%) in the COVID-19-negative group reported persistently poor physical, mental, or social well-being at 3-month follow-up. After adjustment, improvements in well-being were statistically and clinically greater for participants in the COVID-19-positive group vs the COVID-19-negative group only for social participation (β = 3.32; 95% CI, 1.84-4.80; P < .001); changes in other well-being domains were not clinically different between groups. Improvements in well-being in the COVID-19-positive group were concentrated among participants aged 18 to 34 years (eg, social participation: β = 3.90; 95% CI, 1.75-6.05; P < .001) and those who presented for COVID-19 testing in an ambulatory setting (eg, social participation: β = 4.16; 95% CI, 2.12-6.20; P < .001). CONCLUSIONS AND RELEVANCE In this study, participants in both the COVID-19-positive and COVID-19-negative groups reported persistently poor physical, mental, or social well-being at 3-month follow-up. Although some individuals had clinically meaningful improvements over time, many reported moderate to severe impairments in well-being 3 months later. These results highlight the importance of including a control group of participants with negative COVID-19 results for comparison when examining the sequelae of COVID-19.
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Affiliation(s)
- Lauren E. Wisk
- Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine at the University of California, Los Angeles, Los Angeles
- Department of Health Policy and Management, Fielding School of Public Health at the University of California, Los Angeles, Los Angeles
| | - Michael A. Gottlieb
- Department of Emergency Medicine, Rush University Medical Center, Chicago, Illinois
| | - Erica S. Spatz
- Section of Cardiovascular Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut
- Center for Outcomes Research and Evaluation, Yale New Haven Hospital, New Haven, Connecticut
| | - Huihui Yu
- Section of Cardiovascular Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut
- Center for Outcomes Research and Evaluation, Yale New Haven Hospital, New Haven, Connecticut
| | - Ralph C. Wang
- Department of Emergency Medicine, University of California, San Francisco, San Francisco
| | - Benjamin H. Slovis
- Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Sharon Saydah
- National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Ian D. Plumb
- National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Kelli N. O’Laughlin
- Department of Emergency Medicine, University of Washington, Seattle
- Department of Global Health, University of Washington, Seattle
| | - Juan Carlos C. Montoy
- Department of Emergency Medicine, University of California, San Francisco, San Francisco
| | - Samuel A. McDonald
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas
- Clinical Informatics Center, University of Texas Southwestern Medical Center, Dallas
| | - Zhenqiu Lin
- Section of Cardiovascular Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut
- Center for Outcomes Research and Evaluation, Yale New Haven Hospital, New Haven, Connecticut
| | - Jin-Mann S. Lin
- National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Katherine Koo
- Department of Internal Medicine, Rush University Medical Center, Chicago, Illinois
| | - Ahamed H. Idris
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas
| | - Ryan M. Huebinger
- Department of Emergency Medicine, McGovern Medical School, UTHealth Houston, Houston, Texas
| | - Mandy J. Hill
- Department of Emergency Medicine, McGovern Medical School, UTHealth Houston, Houston, Texas
| | - Nicole L. Gentile
- Department of Family Medicine, University of Washington, Seattle
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle
| | - Anna Marie Chang
- Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Jill Anderson
- Department of Medicine, Harborview Center for Prehospital Emergency Care, University of Washington, Seattle
| | | | - Arjun K. Venkatesh
- Center for Outcomes Research and Evaluation, Yale New Haven Hospital, New Haven, Connecticut
- Department of Emergency Medicine, Yale School of Medicine, New Haven, Connecticut
| | - Robert A. Weinstein
- Department of Medicine, Rush University Medical Center, Chicago, Illinois
- Division of Infectious Diseases, Cook County Health, Chicago, Illinois
| | - Joann G. Elmore
- Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine at the University of California, Los Angeles, Los Angeles
- Department of Health Policy and Management, Fielding School of Public Health at the University of California, Los Angeles, Los Angeles
| | - Graham Nichol
- Department of Emergency Medicine, University of Washington, Seattle
- Department of Medicine, Harborview Center for Prehospital Emergency Care, University of Washington, Seattle
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Rindorf D, Somani B, Traxer O, Kamphuis G, Tailly T, Larsen S, Lotte O, Koo K. Repair rate and associated cost of reusable flexible ureteroscopes: A systematic review and meta-analysis. Eur Urol 2021. [DOI: 10.1016/s0302-2838(21)01270-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Thomas A, Manchella S, Koo K, Tiong A, Nastri A, Wiesenfeld D. The impact of delayed diagnosis on the outcomes of oral cancer patients: a retrospective cohort study. Int J Oral Maxillofac Surg 2020; 50:585-590. [PMID: 32917484 DOI: 10.1016/j.ijom.2020.08.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 06/21/2020] [Accepted: 08/21/2020] [Indexed: 12/17/2022]
Abstract
The contemporary literature is discordant regarding the role of delayed diagnosis in the prognosis of patients with oral cancer. This study examined data on a previously reported cohort of 101 patients with oral squamous cell carcinoma diagnosed at a single institution between 2008 and 2010. The time interval between symptom onset and initial histological diagnosis (diagnostic delay) was recorded for each patient, as were demographic data and cancer features such as T stage, nodal status, and smoking status. The mean follow-up period was 4 years 10 months. The mean diagnostic delay was 4 months, mean overall survival was 5years 6 months, and mean disease-specific survival was 4 years 9 months. No significant correlation was found between diagnostic delay and overall survival, disease-specific survival, or recurrence rates. Patients with node-positive disease were more likely to be diagnosed earlier, whereas women and non-smokers were more likely to have a delayed diagnosis. Inherent tumour biology is likely an important prognostic factor separate to diagnostic delay. Public education efforts should focus on symptom recognition and encourage early presentation for investigation of oral lesions, particularly for females and non-smokers, so that more aggressive tumours can be treated sooner to give the best chance at survival.
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Affiliation(s)
- A Thomas
- Head and Neck Tumour Stream, The Royal Melbourne Hospital, Parkville, Victoria, Australia.
| | - S Manchella
- Head and Neck Tumour Stream, The Royal Melbourne Hospital, Parkville, Victoria, Australia
| | - K Koo
- Head and Neck Tumour Stream, The Royal Melbourne Hospital, Parkville, Victoria, Australia
| | - A Tiong
- Head and Neck Tumour Stream, The Royal Melbourne Hospital, Parkville, Victoria, Australia
| | - A Nastri
- Head and Neck Tumour Stream, The Royal Melbourne Hospital, Parkville, Victoria, Australia
| | - D Wiesenfeld
- Head and Neck Tumour Stream, The Royal Melbourne Hospital, Parkville, Victoria, Australia; Department of Surgery, the University of Melbourne, Parkville, Victoria, Australia
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Becker R, Su Z, Huang M, Biles M, Harris K, Koo K, Han M, Allaf M, Herati A, Patel H. In-hospital predictors of post-discharge opioid utilization following radical prostatectomy. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)34048-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Koo K, Gill A, McGuirk S, Monroe E, Reis J, Hawkins C, Shivaram G. 3:18 PM Abstract No. 158 Endovascular management of congenital arterioportal fistulas: a multicenter experience. J Vasc Interv Radiol 2020. [DOI: 10.1016/j.jvir.2019.12.193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Koo K, Liddle AD, Pastides PS, Rosenfeld PF. The Salto total ankle arthroplasty - Clinical and radiological outcomes at five years. Foot Ankle Surg 2019; 25:523-528. [PMID: 30321952 DOI: 10.1016/j.fas.2018.04.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 03/27/2018] [Accepted: 04/05/2018] [Indexed: 02/04/2023]
Abstract
BACKGROUND Modern designs of total ankle arthroplasty (TAA) have the potential to treat symptomatic ankle OA without adversely affecting ankle biomechanics. We present the mid-term results of a modern, mobile-bearing TAA design. METHODS TAA was performed in 50 consecutive patients (55 ankles) in an independent, prospective, single-centre series. Implant survival, patient-reported outcome measures (PROMs) and radiographic outcomes are presented at a mean of five years (range 2-10.5years). RESULTS A total of three patients (four ankles) died and two (two ankles) were lost to follow-up. Three TAAs were revised for aseptic loosening (in two cases) or infection. Two further patients underwent reoperations, one for arthroscopic debridement of anterolateral synovitis and one for grafting of an asymptomatic tibial cyst. With all-cause revision as an endpoint, implant survival was 93.3% at five to ten years (95% CI 80.5%-97.8%). If reoperations are included this falls to 90.2% (95% CI 75.6%-96.3%) at five years. No other patient demonstrated radiographic evidence of loosening or subsidence. PROMs and satisfaction were excellent at latest follow-up. CONCLUSION At five years, the outcomes for this design of TAA in this series were excellent, and were similar to those of previously published series from the designer centre.
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Affiliation(s)
- K Koo
- Singapore General Hospital, Outram Road, 169608, Singapore; Imperial College Healthcare NHS Trust, The Bays, South Wharf Road, St Mary's Hospital, London W2 1NY, United Kingdom; Fortius Clinic, 17 Fitzhardinge Street, London W1H 6EQ, United Kingdom.
| | - A D Liddle
- Imperial College Healthcare NHS Trust, The Bays, South Wharf Road, St Mary's Hospital, London W2 1NY, United Kingdom.
| | - P S Pastides
- Imperial College Healthcare NHS Trust, The Bays, South Wharf Road, St Mary's Hospital, London W2 1NY, United Kingdom.
| | - P F Rosenfeld
- Imperial College Healthcare NHS Trust, The Bays, South Wharf Road, St Mary's Hospital, London W2 1NY, United Kingdom; Fortius Clinic, 17 Fitzhardinge Street, London W1H 6EQ, United Kingdom.
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Yap T, Seers C, Koo K, Cheng L, Vella LJ, Hill AF, Reynolds E, Nastri A, Cirillo N, McCullough M. Non-invasive screening of a microRNA-based dysregulation signature in oral cancer and oral potentially malignant disorders. Oral Oncol 2019; 96:113-120. [PMID: 31422202 DOI: 10.1016/j.oraloncology.2019.07.013] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Revised: 07/08/2019] [Accepted: 07/11/2019] [Indexed: 01/06/2023]
Abstract
INTRODUCTION We have previously shown that oral swirls are a robust source of microRNA protected by extracellular vesicles, potentially useful to detect oral squamous cell carcinoma (OSCC)-associated molecular aberration. OBJECTIVES To study a developed dysregulation score and risk classification algorithm based upon a panel of OSCC-associated microRNA in oral swirls from individuals with OSCC and oral potentially malignant disorders (OPMDs). MATERIALS AND METHODS An OSCC-associated panel of 5 microRNAs (miR-24; miR-21; miR-99a; let-7c; miR-100;) was quantified by qPCR in 190 individuals with and without mucosal abnormalities, including OSCC (n = 53) and OPMDs (n = 74). Each sample was analyzed using a developed dysregulation score (dSCORE) and risk classification algorithm, allocating a LOW- or HIGH-RISK score. The influence of demographic, systemic, oral health and mucosal disease factors on the developed test was analyzed. RESULTS MicroRNA for analysis can be predictably isolated from oral swirls sourced from individuals with a range of demographic, systemic and oral health findings. Utilizing the presence of HIGH-RISK identified OSCC patients with 86.8% sensitivity and 81.5% specificity. Older age and female gender were associated with higher dSCOREs and higher proportions of HIGH-RISK classification amongst individuals with no mucosal abnormalities. The dSCOREs for all subgroups of OPMDs were significantly different from the OSCC group. CONCLUSION This is the first comparison of microRNA sourced from oral swirls from individuals with OPMDs with individuals with and without OSCC. A HIGH-RISK dysregulation signature was found to be accurate in indicating the presence of OSCC and exampled to parallel malignant transformation.
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Affiliation(s)
- T Yap
- Melbourne Dental School, University of Melbourne, Victoria, Australia.
| | - C Seers
- Melbourne Dental School, University of Melbourne, Victoria, Australia; Oral Health Cooperative Research Centre, Melbourne, Victoria, Australia
| | - K Koo
- Department of Surgery, Royal Melbourne Hospital, Victoria, Australia
| | - L Cheng
- Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University, Victoria, Australia
| | - L J Vella
- The Florey Institute of Neuroscience and Mental Health, Parkville, Victoria, Australia; Department of Surgery, The University of Melbourne, The Royal Melbourne Hospital, Parkville, Victoria 3050, Australia
| | - A F Hill
- Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University, Victoria, Australia
| | - E Reynolds
- Melbourne Dental School, University of Melbourne, Victoria, Australia; Oral Health Cooperative Research Centre, Melbourne, Victoria, Australia
| | - A Nastri
- Department of Oral and Maxillofacial Surgery, Royal Melbourne Hospital, Victoria, Australia
| | - N Cirillo
- Melbourne Dental School, University of Melbourne, Victoria, Australia; Oral Health Cooperative Research Centre, Melbourne, Victoria, Australia
| | - M McCullough
- Melbourne Dental School, University of Melbourne, Victoria, Australia; Oral Health Cooperative Research Centre, Melbourne, Victoria, Australia
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Pierce D, Shivaram G, Koo K, Shaw D, Meyer K, Monroe E. Abstract No. 596 Ultrasound-guided lumbar puncture in pediatric patients: technical success and safety. J Vasc Interv Radiol 2018. [DOI: 10.1016/j.jvir.2018.01.641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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Smith J, Monroe E, Shivaram G, Shaw D, Koo K. 3:45 PM Abstract No. 116 An update of one institution’s experience with the use of arterial closure devices following femoral arterial puncture in children. J Vasc Interv Radiol 2018. [DOI: 10.1016/j.jvir.2018.01.132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Shivaram G, Monroe E, Koo K, Gill A, Hawkins C. 3:09 PM Abstract No. 112 C-arm cone-beam computed tomography navigational overlay pediatric lung nodule biopsy: safety and technical success. J Vasc Interv Radiol 2018. [DOI: 10.1016/j.jvir.2018.01.128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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DeAngelis A, Breik O, Koo K, Nastri A, McCullough M, Wiesenfeld D. Non-smoking, non-drinking elderly females, a five-year follow-up of a clinically distinct cohort of oral squamous cell carcinoma patients. Int J Oral Maxillofac Surg 2017. [DOI: 10.1016/j.ijom.2017.02.419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Koo K, Wee E, Mainwaring P, Wang Y, Trau M. Towards precision medicine: A cancer molecular subtyping nano-strategy for RNA biomarkers in tumor and urine. Eur J Cancer 2016. [DOI: 10.1016/s0959-8049(16)32680-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Koo K, Fung Tse L, Cheng HS, Wai HK. The progression of severe hallux valgus in the oriental population in Hong Kong. Int J Surg 2016. [DOI: 10.1016/j.ijsu.2016.08.412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Lee S, Ahn JH, Choi H, Seo JM, Cho D, Koo K. Natural magnetic nanoparticle containing droplet for smart drug delivery and heat treatment. Annu Int Conf IEEE Eng Med Biol Soc 2016; 2015:3541-4. [PMID: 26737057 DOI: 10.1109/embc.2015.7319157] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Biodegradable polymer droplet containing natural magnetic nanoparticle is composed for smart drug delivery and heat treatment. For selective and efficient drug delivery to the target tissue, direct high magnetic field will be applied near the target tissue. For drug release control and heat treatment, alternative high magnetic field will be applied. Magnetosome, natural magnetic nanoparticle, is extracted from magnetotactic bacteria, AMB-1. Mixture of magnetosome and sodium alginate composes into droplet using the microfluidic device applied Plateau-Rayleigh instability principle. The magnetosome contained droplet selected its rout at the bifurcate microchannels by direct high magnetic field. High alternative magnetic field generating circuit is designed with 18 mT and 4 Hz magnetic wave. The generated magnetic wave was applied to the extracted magnetosomes so that temperature of the magnetosomes increased from 15.2°C to 17.6°C.
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Barrowman R, Koo K, Wiesenfeld D, Nastri A, McCullough M. Oral cancer in non-smokers, non-drinkers: a systematic review. Int J Oral Maxillofac Surg 2015. [DOI: 10.1016/j.ijom.2015.08.460] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Lauzon N, Bedard G, Zhang L, Sahgal A, Zeng L, Koo K, Chow E. Health Care Professionals' Evaluation of Quality Of Life Issues in Patients with Brain Metastases. J Med Imaging Radiat Sci 2013. [DOI: 10.1016/j.jmir.2012.12.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Lauzon N, Bedard G, Zhang L, Sahgal A, Zeng L, Koo K, Chow E. PO-0948: Health care professionals' evaluation of quality of life issues in patients with brain metastases. Radiother Oncol 2013. [DOI: 10.1016/s0167-8140(15)33254-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Jenkinson S, Koo K, Mansour MR, Goulden N, Vora A, Mitchell C, Wade R, Richards S, Hancock J, Moorman AV, Linch DC, Gale RE. Impact of NOTCH1/FBXW7 mutations on outcome in pediatric T-cell acute lymphoblastic leukemia patients treated on the MRC UKALL 2003 trial. Leukemia 2013; 27:41-7. [PMID: 22814294 DOI: 10.1038/leu.2012.176] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2012] [Accepted: 06/27/2012] [Indexed: 12/24/2022]
Abstract
Activating mutations in the NOTCH1 pathway are frequent in pediatric T-cell acute lymphoblastic leukemia (T-ALL) but their role in refining risk stratification is unclear. We screened 162 pediatric T-ALL patients treated on the MRC UKALL2003 trial for NOTCH1/FBXW7 gene mutations and related genotype to response to therapy and long-term outcome. Overall, 35% were wild-type (WT) for both genes (NOTCH1(WT)FBXW7(WT)), 38% single NOTCH1 mutant (NOTCH1(Single)FBXW7(WT)), 3% just FBXW7 mutant (NOTCH1(WT)FBXW7(MUT)) and 24% either double NOTCH1 mutant (NOTCH1(Double)FBXW7(WT)) or mutant in both genes (NOTCH1(MUT)FBXW7(MUT)), hereafter called as NOTCH1±FBXW7(Double). There was no difference between groups in early response to therapy, but NOTCH1±FBXW7(Double) patients were more likely to be associated with negative minimal residual disease (MRD) post-induction than NOTCH1(WT)FBXW7(WT) patients (71% versus 40%, P=0.004). Outcome improved according to the number of mutations, overall survival at 5 years 82%, 88% and 100% for NOTCH1(WT)FBXW7(WT), NOTCH1(Single)FBXW7(WT) and NOTCH1±FBXW7(Double) patients, respectively (log-rank P for trend=0.005). Although 14 NOTCH1±FBXW7(Double) patients were classified as high risk (slow response and/or MRD positive), only two had disease progression and all remain alive. Patients with double NOTCH1 and/or FBXW7 mutations have a very good outcome and should not be considered for more intensive therapy in first remission, even if slow early responders or MRD positive after induction therapy.
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Affiliation(s)
- S Jenkinson
- Department of Haematology, UCL Cancer Institute, London, UK
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Chiang A, Zeng L, Koo K, Chow E, Lochray F, Masucci L, Korol R, Sahgal A. Incidence of Pain Flare Following Stereotactic Body Radiation Therapy for Bone Metastases. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Kekalo K, Koo K, Zeitchick E, Baker I. Microemulsion Synthesis of Iron Core/Iron Oxide Shell Magnetic Nanoparticles and Their Physicochemical Properties. ACTA ACUST UNITED AC 2012; 1416. [PMID: 26549922 DOI: 10.1557/opl.2012.736] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Iron magnetic nanoparticles were synthesized under an inert atmosphere via the reaction between FeCl3 and NaBH4 in droplets of water in a microemulsion consisting of octane with cetyl trimethylammonium bromide and butanol as surfactants. A thin Fe3O4 layer was produced on the iron nanoparticles using slow, controlled oxidation at room temperature. A silica shell was deposited on the Fe3O4 using 3-aminopropyltrimethoxysilane following the method of Zhang et al. [Mater. Sci. Eng. C 30 (2010) 92-97]. The structure and chemistry of the resulting nanoparticles were studied using variety of methods and their magnetic properties were determined. The diameter of the iron core was typically 8-16 nm, while the thickness of the Fe3O4 shell was 2-3 nm. The presence of the silica layer was confirmed using Fourier transform infra-red spectroscopy and the number of NH2-groups on each nanoparticle was determined based on colorimetric tests using ortho-phthalaldehyde.
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Affiliation(s)
- Katsiaryna Kekalo
- Thayer School of Engineering at Dartmouth College, Hanover, New Hampshire, USA
| | - Katherine Koo
- Thayer School of Engineering at Dartmouth College, Hanover, New Hampshire, USA
| | - Evan Zeitchick
- Thayer School of Engineering at Dartmouth College, Hanover, New Hampshire, USA
| | - Ian Baker
- Thayer School of Engineering at Dartmouth College, Hanover, New Hampshire, USA
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Dennis K, Wong K, Zhang L, Culleton S, Nguyen J, Holden L, Jon F, Tsao M, Danjoux C, Barnes E, Sahgal A, Zeng L, Koo K, Chow E. Palliative Radiotherapy for Bone Metastases in the Last 3 Months of Life: Worthwhile or Futile? Clin Oncol (R Coll Radiol) 2011; 23:709-15. [DOI: 10.1016/j.clon.2011.05.004] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2010] [Revised: 03/24/2011] [Accepted: 03/28/2011] [Indexed: 11/29/2022]
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Caissie A, Zeng L, Nguyen J, Zhang L, Jon F, Dennis K, Holden L, Culleton S, Koo K, Tsao M, Barnes E, Danjoux C, Sahgal A, Simmons C, Chow E. Assessment of health-related quality of life with the European Organization for Research and Treatment of Cancer QLQ-C15-PAL after palliative radiotherapy of bone metastases. Clin Oncol (R Coll Radiol) 2011; 24:125-33. [PMID: 21917431 DOI: 10.1016/j.clon.2011.08.008] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2011] [Revised: 07/08/2011] [Accepted: 08/30/2011] [Indexed: 10/17/2022]
Abstract
AIMS To assess health-related quality of life (HRQOL) after palliative radiotherapy for painful bone metastases using a palliative questionnaire (European Organization for Research and Treatment of Cancer QLQ-C15-PAL). MATERIALS AND METHODS Patients scheduled to receive palliative radiotherapy for painful bone metastases (n=178) completed the QLQ-C15-PAL questionnaire before treatment and at week 1, week 2, month 1 and month 2 after the first day of radiotherapy. A partial response (PR) or a complete response (CR) to radiotherapy was defined according to the International Consensus criteria. General linear regression was used to analyse changes in QOL in the entire cohort and within responders and non-responders to radiotherapy at all follow-up periods. RESULTS The overall radiotherapy response was 45% at week 1 (n=21) (41% PR, 4% CR), 62% at week 2 (n=28) (58% PR, 4% CR), 62% at month 1 (n=58) (60% PR, 2% CR) and 65% at month 2 (n=38) (60% PR, 5% CR). In general, a significant decrease in pain (P<0.0001), insomnia (P<0.0001) and constipation (P=0.004) was seen by month 1 after radiotherapy. In patients who responded to radiotherapy, overall QOL significantly improved by month 2 after radiotherapy (P=0.002). Radiotherapy responders also reported an improvement in emotional functioning together with a decrease in symptoms such as insomnia and constipation at month 1. No improvements were seen in any of the QLQ-C15-PAL scores for patients whose pain did not respond to radiotherapy. CONCLUSION Radiotherapy responders showed not only an improvement in pain, but also in HRQOL as assessed by QLQ-C15-PAL. As early as 1 week after radiotherapy for bone metastases, a pain relief response was reported by patients.
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Affiliation(s)
- A Caissie
- Rapid Response Radiotherapy Program, Department of Radiation Oncology, Odette Cancer Centre, University of Toronto, Ontario, Canada
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Kanesvaran R, Li H, Koo K, Poon D. An analysis of prognostic factors of comprehensive geriatric assessment (CGA) and development of a clinical scoring system in elderly Asian cancer patients. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.9165] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Koo K, Park Y, Choe J, Kim E. Preparations of microencapsulated PCMs-coated nylon fabrics by wet and dry coating process and comparison of their properties. POLYM ENG SCI 2009. [DOI: 10.1002/pen.21350] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Fan X, Tyerman K, Ang A, Koo K, Parameswaran K, Tao K, Mai L, Lang H, West LJ. A novel tool for B-cell tolerance research: characterization of mouse alloantibody development using a simple and reliable cellular ELISA technique. Transplant Proc 2005; 37:29-31. [PMID: 15808536 DOI: 10.1016/j.transproceed.2004.12.119] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
In animal-based transplantation research, the measurement of anti-donor antibodies in transplant recipients is limited by lack of an appropriate technique. We have developed a novel immunoassay capable of quantifying antibody bound to cell-surface major histo- compatability complex (MHC) and non-MHC antigens, using splenocytes from wild-type and MHC-deficient mice as antigen-bearing target cells. We utilized our "cellular ELISA" (CELISA) technique to study the development of tolerance versus immunity in the B-cell compartment in response to neonatal exposure to allogeneic fetal liver cells (FLC). This neonatal tolerance protocol typically induces permanent acceptance of donor-type and third-party cardiac allografts, but rejection of both donor-type and third-party skin grafts occurs. C3H/He (C3H; H-2(k)) mice were injected as neonates with BALB/c (BALB; H-2(d)) FLC and transplanted as adults with C57BL/6 (B6; H-2(b)) cardiac grafts. Despite long-term acceptance of third-party B6 cardiac grafts, serum contained increased anti-B6 IgG and IgM levels as measured by CELISA; IgM production was elevated by 2 weeks posttransplant and remained stable, while IgG production increased rapidly between 2 and 5 weeks posttransplant. In another experimental setting, CELISA assays were able to detect that neonatal injection of C3H mice with FLC from wild-type B6 mice or from MHC class II-deficient or class I/II-deficient (B6 background) mice (CI(+)CII(+), CI(+)CII(-), CI(-)CII(-), respectively) prevented sensitization to B6 antigens by subsequent skin transplants but did not induce graft acceptance, whereas FLC from MHC class I-deficient-only (CI(-)CII(+)) did not prevent B6 sensitization. The CELISA technique is a simple and sensitive means for quantifying alloantibodies in mice and will assist in further delineating the role of the B-cell compartment in neonatally induced cardiac allograft acceptance.
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Affiliation(s)
- X Fan
- Division of Cardiology, Department of Paediatrics, Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
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Koo K, Jaykus LA. Detection of single nucleotide polymorphisms within the Listeria genus using an 'asymmetric' fluorogenic probe set and fluorescence resonance energy transfer based-PCR. Lett Appl Microbiol 2003; 35:513-7. [PMID: 12460435 DOI: 10.1046/j.1472-765x.2002.01232.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
AIMS We describe a novel and inexpensive fluorescence energy transfer (FRET)-based PCR protocol to distinguish single nucleotide polymorphisms (SNPs) within the genus Listeria. METHODS AND RESULTS Sequence information for the 16S rRNA gene of representative Listeria species was used to design genus-specific primers and two species-specific probes that differed in sequence by one single nucleotide. The probes were 5' labelled with either fluorescein or Texas Red, quenched with a shorter yet complementary 3' dimethyl-amino-phenyloazo benzoic acid (DABCYL) labelled oligonucleotide, and then incorporated into a previously reported 'asymmetric' FRET-based PCR detection protocol. CONCLUSIONS Listeria monocytogenes could be readily distinguished from other members of the Listeria genus after PCR amplification and measurement of endpoint fluorescence at two different wavelengths. SIGNIFICANCE AND IMPACT OF THE STUDY The relatively low cost and high flexibility of this system will benefit laboratories in their efforts to develop rapid and specific methods to detect minor sequence differences between related microorganisms.
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Affiliation(s)
- K Koo
- Department of Food Science, College of Agriculture and Life Sciences, North Carolina State University and South-east Dairy Foods Research Center, Raleigh, North Carolina 27695-7624, USA
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Affiliation(s)
- K Koo
- North Carolina State University Raleigh, USA
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Koo K, Jaykus LA. Selective amplification of bacterial RNA: use of a DNA primer containing mismatched bases near its 3' terminus to reduce false-positive signals. Lett Appl Microbiol 2000; 31:187-92. [PMID: 10972726 DOI: 10.1046/j.1365-2672.2000.00798.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
A reverse transcription PCR (RT-PCR) method designed to reduce false-positive results due to the co-amplification of contaminating genomic DNA is reported. Feasibility of the method was evaluated using 16S rRNA sequences specific to Bacillus cereus. A DNA oligonucleotide primer, consisting of 22-bases containing three consecutive mismatched bases near its 3' terminus (primer B16RT), was used for reverse transcription and in subsequent cDNA amplification. Specific rRNA was reverse transcribed at low temperature (40 degrees C or 45 degrees C) in the presence of primer B16RT. As subsequent PCR using primer B16RT at high (62 degrees C) annealing temperatures is not nearly as efficient as amplification using the specific primer, amplification of genomic DNA was hindered relative to the amplification of cDNA. The method was readily adapted to the selective amplification of mRNA of the Listeria monocytogenes listeriolysin O (hly) gene.
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Affiliation(s)
- K Koo
- Department of Food Science, College of Agriculture and Life Sciences, North Carolina State University, Raleigh, NC 27695-7624, USA
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Zhu Y, Koo K, Bradshaw JD, Sutton WF, Kuller LR, Bucala R, Anderson D, Mossman SP, Villinger F, Haigwood NL. Macaque blood-derived antigen-presenting cells elicit SIV-specific immune responses. J Med Primatol 2000; 29:182-92. [PMID: 11085581 DOI: 10.1034/j.1600-0684.2000.290312.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Natural blood-borne antigen-presenting cells (APCs) were tested for their ability to augment antigen presentation for SIV vaccines. Fibrocytes and monocyte-derived dendritic cells (DCs) were isolated from multiple Macaca fascicularis. Macaque fibrocytes displayed the characteristic cellular morphology and stained positive for CD34 and collagen, as observed in human and murine fibrocytes. Macaque DCs were generated from monocytes by culturing in granulocyte-macrophage colony stimulating factor and interleukin-4 (IL-4). Two days after maturation, cells were enriched for the DC marker CD83. Fibrocytes and DCs were each transfected with green fluorescence protein expression plasmids or DNA expression vectors encoding all of the SIVmne structural and regulatory genes. Autologous DCs were re-infused into macaques subcutaneously (sc) following transfection; mixing with recombinant SIV antigens or inactivated whole SIV in vitro; or mock-treatment. Autologous monocyte-derived DCs pulsed with whole inactivated SIV were re-infused and elicited cellular and/or humoral responses in vivo in eight of ten vaccinated macaques.
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Affiliation(s)
- Y Zhu
- Seattle Biomedical Research Institute, Seattle, WA 98109, USA
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Abstract
Control of microorganisms such as Bacillus cereus spores is critical to ensure the safety and a long shelf life of foods. A bifunctional single chain antibody has been developed for detection and binding of B. cereus T spores. The genes that encode B. cereus T spore single-chain antibody and streptavidin were connected for use in immunoassays and immobilization of the recombinant antibodies. A truncated streptavidin, which is smaller than but has biotin binding ability similar to that of streptavidin, was used as the affinity domain because of its high and specific affinity with biotin. The fusion protein gene was expressed in Escherichia coli BL21 (DE3) with the T7 RNA polymerase-T7 promoter expression system. Immunoblotting revealed an antigen specificity similar to that of its parent native monoclonal antibody. The single-chain antibody-streptavidin fusion protein can be used in an immunoassay of B. cereus spores by applying a biotinylated enzyme detection system. The recombinant antibodies were immobilized on biotinylated magnetic beads by taking advantage of the strong biotin-streptavidin affinity. Various liquids were artificially contaminated with 5 x 10(4) B. cereus spores per ml. Greater than 90% of the B. cereus spores in phosphate buffer or 37% of the spores in whole milk were tightly bound and removed from the liquid phase by the immunomagnetic beads.
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Affiliation(s)
- K Koo
- Department of Food Science, North Carolina State University, Raleigh, USA
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Abstract
The variable-region genes of monoclonal antibody against Bacillus cereus spores were cloned from mouse hybridoma cells by reverse transcription-PCR. The heavy- and light-chain variable-region genes were connected by a 45-base linker DNA to allow folding of the fusion protein into a functional tertiary structure. For detection of protein expression, a 10-amino-acid strep tag (biotin-like peptide) was attached to the C terminus of recombinant antibody as the reporter peptide. The single-chain antibody construct was inserted into the expression vector and expressed in Escherichia coli under the control of the T7 RNA polymerase-T7 promoter expression system. The expressed single-chain antibody was detected on Western blots by using a streptavidin-conjugated enzyme system. This small recombinant antibody fragment (ca. 28,000 Da by calculation) had B. cereus spore binding ability and antigen specificity similar to those of its parent native monoclonal antibody.
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Affiliation(s)
- K Koo
- Department of Food Science, North Carolina State University, Raleigh 27695-7624, USA
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Parra-Gessert L, Koo K, Fajardo J, Weiss RL. Processing and function of a polyprotein precursor of two mitochondrial proteins in neurospora crassa. J Biol Chem 1998; 273:7972-80. [PMID: 9525895 DOI: 10.1074/jbc.273.14.7972] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
In Neurospora crassa, the mitochondrial arginine biosynthetic enzymes, N-acetylglutamate kinase (AGK) and N-acetyl-gamma-glutamyl-phosphate reductase (AGPR), are generated by processing of a 96-kDa cytosolic polyprotein precursor (pAGK-AGPR). The proximal kinase and distal reductase domains are separated by a short connector region. Substitutions of arginines at positions -2 and -3 upstream of the N terminus of the AGPR domain or replacement of threonine at position +3 in the mature AGPR domain revealed a second processing site at position -20. Substitution of arginine at position -22, in combination with changes at -2 and -3, prevented cleavage of the precursor and identified two proteolytic cleavage sites, Arg-Gly downward arrow Tyr-Leu-Thr at the N terminus of the AGPR domain and Arg-Gly-Tyr downward arrow Ser-Thr located 20 residues upstream. Inhibitors of metal-dependent peptidases blocked proteolytic cleavage at both sites. Amino acid residues required for proteolytic cleavage in the connector were identified, and processing was abolished by mutations changing these residues. The unprocessed AGK-AGPR fusion had both catalytic activities, including feedback inhibition of AGK, and complemented AGK-AGPR- mutants. These results indicate that cleavage of pAGK-AGPR is not required for functioning of these enzymes in the mitochondria.
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Affiliation(s)
- L Parra-Gessert
- Department of Chemistry and Biochemistry, UCLA, Los Angeles, California 90095-1569, USA
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Ishikawa T, Ichikawa Y, Miura Y, Momiyama M, Keller C, Koo K, Akitaya T, Shimada H, Mitsuhashi M. Construction of cDNA bank from biopsy specimens for multiple gene analysis of cancer. Clin Chem 1997; 43:764-70. [PMID: 9166229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
We constructed a "cDNA bank" of human colorectal cancer and surrounding normal tissues with our unique mRNA assay system. Total nucleic acids extracted from patients' tissues were applied to 96-well plates, where poly(dT) sequences of oligonucleotides were immobilized. After hybridization, the cDNA was reverse-transcribed on the plate with the captured mRNA as a template, followed by synthesis of double-stranded (ds) cDNA. The resulting sense cDNA was removed from the plate, then used in PCR for analysis of various genes. The sense strand of the cDNA was repeatedly synthesized by using the immobilized antisense cDNA as a template even from plates used once and stored at 4 degrees C for as long as 6 months. Furthermore, the results of PCR could be easily compared among different specimens if the same amount of total mRNA were applied to the plate for the ds cDNA synthesis. This demonstrated that the cDNA bank constructed from clinical materials provides almost unlimited supplies of cDNA for multiple gene analysis of cancer.
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Affiliation(s)
- T Ishikawa
- Second Department of Surgery, Yokohama City University, School of Medicine, Japan
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Abstract
BACKGROUND Malignant primary liver tumors are an uncommon and challenging surgical problem. In spite of multimodality therapies, surgical resection remains the mainstay of treatment and the most likely chance for cure. We reviewed the 13-year resection experience of a single surgeon at our institution to evaluate the results. METHODS A retrospective review from July 1982 to June 1995 was performed for patients presenting with a diagnosis of primary liver cancer. Those undergoing resection of their primary liver tumors form the basis of this report. RESULTS One hundred eighty-four patients with a diagnosis of primary liver cancer were seen at our institution. Of these, 43 patients underwent 46 resections of their cancers by a single surgeon. There were 22 females (51%) and 21 males (49%). The average age was 61 years with a median age of 63 years (range, 19-85 years). Tumors resected included 27 hepatomas, 16 cholangiocellular carcinomas, 1 carcinoid tumor, 1 low grade mucinous cystadenocarcinoma, and 1 cystadenocarcinoma. Resections were as follows: 9 right trisegmentectomies, 8 right lobectomies, 1 left trisegmentectomy, 4 left lobectomies, 7 left lateral segmentectomies, and 17 partial lobectomies. Major complications occurred in 11 patients (26%). There were 3 deaths, for a 30-day perioperative death rate of 7%. Of the 43 patients, 13 had follow-up of less than 12 months and 30 had follow-up for more than 1 year. The mean survival of the 30 patients who had their tumors resected and were followed up for more than 1 year was 27.2 months and the median survival was 21 months. The median survival of patients not undergoing resection was less than 6 months. The 1-, 2-, 3-, and 5-year survival rates were 57%, 52%, 40%, and 33%, respectively. CONCLUSIONS Primary liver cancer can be treated by resection with acceptable results. This remains the standard treatment of any liver cancer. Survival rates of patients after resection are much better than survival rates of patients who do not undergo surgery.
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Affiliation(s)
- R F Holbrook
- Department of Surgery, Virginia Mason Medical Center, Seattle, Washington 98111, USA
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Traverso LW, Roush TS, Koo K. CBD stones--outcomes and costs. Laparoscopic transcystic techniques other than choledochoscopy. Surg Endosc 1995; 9:1242-4. [PMID: 8553247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- L W Traverso
- Department of Surgery, Virginia Mason Medical Center, Seattle, WA, USA
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Ogura M, Keller C, Koo K, Mitsuhashi M. Use of the fluorescent dye YOYO-1 to quantify oligonucleotides immobilized on plastic plates. Biotechniques 1994; 16:1032-4. [PMID: 8074866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Affiliation(s)
- M Ogura
- Division of Medical Sciences, Hitachi Chemical Research Center, Irvine, CA 92715
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Fong D, Rodriguez R, Koo K, Sun J, Sogin ML, Bushek D, Littlewood DT, Ford SE. Small subunit ribosomal RNA gene sequence of the oyster parasite Perkinsus marinus. Mol Mar Biol Biotechnol 1993; 2:346-50. [PMID: 8193669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The small subunit rRNA gene of the oyster pathogen Perkinsus marinus was characterized from cells of infected oyster hemolymph by polymerase chain reaction and molecular cloning. The gene, 1,793 nucleotides in size, has 77.2% sequence similarity to that of its host, the eastern oyster Crassostrea virginica. The sequence was confirmed using recently available in vitro cultures of P. marinus. DNA from pure P. marinus culture was amplified with specific primers synthesized according to the sequence from infected oyster hemolymph, and predicted size fragments were obtained. Furthermore, restriction digests yielded fragments of expected size in amplified rDNA from in vitro cultures. The P. marinus sequence has 97.5% similarity to the Perkinsus sp. sequence from the Australian mollusc Anadara trapezia.
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Affiliation(s)
- D Fong
- Bureau of Biological Research, Rutgers, State University of New Jersey, Piscataway 08855
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Abstract
The gene product of the mtr locus of Neurospora crassa is required for the transport of neutral aliphatic and aromatic amino acids via the N system. We have previously cloned three cosmids containing Neurospora DNA that complement the mtr-6(r) mutant allele. The cloned DNAs were tightly linked to restriction fragment length polymorphisms that flank the mtr locus. A 2.9-kbp fragment from one cosmid was subcloned and found to complement the mtr-6(r) allele. Here we report the sequence of the fragment that hybridized to a poly(A)+ mRNA transcript of about 2300 nucleotides. We have identified an 845-bp open reading frame (ORF) having a 59-bp intron as the potential mtr ORF. S1 nuclease analysis of the transcript confirmed the transcript size and the presence of the intron. A second open reading frame was found upstream in the same reading frame as the mtr ORF and appears to be present in the mRNA transcript. The mtr ORF is predicted to encode a 261 amino acid polypeptide with a molecular mass of 28 613 Da. The proposed polypeptide exhibits six potential alpha-helical transmembrane domains with an average length of 23 amino acids, does not have a signal sequence, and contains amino acid sequence homologous to an RNA binding motif.
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Affiliation(s)
- K Koo
- Department of Genetics and Molecular Biology, John A. Burns School of Medicine, University of Hawaii, Honolulu 96822
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Abstract
Translocation of neutral aliphatic and aromatic amino acids across the plasma membrane of the ascomycete Neurospora crassa requires a functional gene product of the mtr locus. Mutations at this locus are defective in transport of those amino acids. We have cloned the mtr+ gene of Neurospora crassa from an ordered cosmid library of genomic DNA and produced a preliminary restriction map of 2.9 kilobases of genomic DNA that encompasses the mtr coding region. We have confirmed that the cloned DNA regions contain the mtr gene sequence by restriction fragment length polymorphism mapping and have determined that the cloned sequence codes for a messenger RNA transcript of approximately 1200 nucleotides in length.
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Affiliation(s)
- W D Stuart
- Department of Genetics, School of Medicine, University of Hawaii, Honolulu 96822
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Sheem SK, Giallorenzi TG, Koo K. Optical techniques to solve the signal fading problem in fiber interferometers. Appl Opt 1982; 21:689-693. [PMID: 20372518 DOI: 10.1364/ao.21.000689] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
In single-mode optical fiber interferometer sensors environmental effects such as ambient temperature fluctuations and static pressure changes result in signal fading. Three different optical techniques which eliminate the signal fading problem are presented and experimentally verified. Comparison of the three techniques in terms of their technical merits is presented.
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